Message-ID: <00bb01c09870$d00c4cc0$5b4bdcc8@alain-nb>
From: "Alain" <alainm AT pobox DOT com>
To: <opendos AT delorie DOT com>
Subject: Re: CP/M Question
Date: Fri, 16 Feb 2001 20:25:31 -0300
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Reply-To: opendos AT delorie DOT com

>As I recall, it was CP/M 2.2 (the last of the CP/M-80 8bit) was called
>CP/M 2.2 56K. Yjay would mean that after CM/P is loaded, you have 56K to
>work with. I would asume that included the CCP being loaded. It has been
>a very long time since I worked with CP/M-80 and that was on my
>PPLE ][ with a Z-80 card installed. Of course if your computer had less
>than 64K then the memory available would be poportional. CP/M occupied
>8K. I don't know if any CCPs were any larger. There were other related
>OSes put out by DRI, such as MP/M which was a multiuser CP/M and some
>others including DOS Plus which was basically CP/M-86 version 3.3 and
>was the fore runner to DRDOS.

The name CP/M 56k was in Apple ][ machines. In these machines there
was a ROM problem in the Apple ][ that used the upper 8k. 
In other machines designed for CP/M (I designed one myself) you
could have a CP/M 64k which gave 8k more free space. But as soon
as you wanted different disk drivers (standard was 8" 243k) you needed
a larger BIOS and it was down to CP/M 63k.

>If you want to run CP/M-80 programs on the IBM, you will need to get a
>CP/M-80 emulator I have a couple of them, but don't recall their names.

They were very good emulators, I had even a working version of 
Turbo Pascal running. It was even much faster then original CP/M
because the machines were much faster ;-)

Alain